I have 4 young hens who just recently started laying. I believe the eggs are fertile as i have 2 roosters who are quite active . At the moment I am getting 1 to 2 eggs a day.she would like 6. Can I just collect, store round end up in carton, and store in cool house? How many days? Anything else I should do? Is it too soon as they have been laying for 2 months